SF2CE setup works 91634B B board or 91635B
91634B board needs 27C4096G
91635B board needs 27C4000G
for 91634B place roms as labeled
for 91635B swap 2nd and 3rd and 6th and 7th
so you might need to burn gfx into 27C4000G chips for a 91635B B board
27C4096G for gfx and prg
27512 for 12a
MBM27C1000 on 11c and 12c (depends on jumpers)

Hey.
In fact on CPS1 any game can be converted to be used with a different B-board and/or a different C-board.

To use a different B-board most of the time you have to handcraft a new PAL and merge/split and/or interleave/de-interleave ROM files. PAL equations are in MAME, you just need to know how output pins of the PAL are connected on the B-board.

Regarding the IOB1/LWIO PAL on the B-board, in fact all games can use a LWIO instead of the IOB1 but only Forgotten Worlds/Lost Worlds requires it (to access the spinners through the Nec chip).

Selling files for conversions/desuicide on Sega System C2/Sega System 24/Sega System 32, Capcom CPS1, Irem M92/M107 and more (just ask)
Money is reinvested in boards, parts and tools in order to release more stuff.
Contact me through my blog: arcadefixer.blogspot.co.nz/

Use S224B pal jed burned into gal16v8 then cut off top right pin (pin 20)

This makes no sense to me. Pin 20 (top right) is the power pin (Vcc).
Also if equations are adapted properly no pin has to be rerouted or cut.

Selling files for conversions/desuicide on Sega System C2/Sega System 24/Sega System 32, Capcom CPS1, Irem M92/M107 and more (just ask)
Money is reinvested in boards, parts and tools in order to release more stuff.
Contact me through my blog: arcadefixer.blogspot.co.nz/

I don't remember. I haven't messed with CPS1 conversions in probably 6 years. I used to buy them off eBay and pcb shops, they came from all over. I've also bought them off Legend (HK). In fact they have one now for cheaper than the hardware itself is worth if someone wants to buy it and dump/share:

Use S224B pal jed burned into gal16v8 then cut off top right pin (pin 20)

This makes no sense to me. Pin 20 (top right) is the power pin (Vcc).Also if equations are adapted properly no pin has to be rerouted or cut.

Yes but it works. I didn't create that conversion, I bought it on a pcb like this (if I'm remembering correctly).

Do you still have the board? There must be jumper wires to get around this "issue".

Selling files for conversions/desuicide on Sega System C2/Sega System 24/Sega System 32, Capcom CPS1, Irem M92/M107 and more (just ask)
Money is reinvested in boards, parts and tools in order to release more stuff.
Contact me through my blog: arcadefixer.blogspot.co.nz/

This intrigates me a lot. Either the chip isn't a GAL16V8 or pins are arranged differently (weird/rare chip package like the W package for TTL chips).

Selling files for conversions/desuicide on Sega System C2/Sega System 24/Sega System 32, Capcom CPS1, Irem M92/M107 and more (just ask)
Money is reinvested in boards, parts and tools in order to release more stuff.
Contact me through my blog: arcadefixer.blogspot.co.nz/

If you want to convert cps-1 games for the b_21 you can look here : arcade-area.lebonforum.com/f52-le-cps-1
You have all modifications to do (not all games on this link, but we have done all game on b_21
Just the japan version of kod is horrible (i haven't decrypted it correctly)
Thanks layer, Neocps1 and dlfrsilver